# SDR ASAA2019022828392

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2019
- Submitted: March 1, 2019
- Operation: Air carrier
- Aircraft: [N589AS](https://openairdocs.org/aircraft/N589AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35686
- Aircraft time: 42,932 hours, 12,923 cycles
- System (JASC): [2162 · Cabin Temperature Indicator](https://openairdocs.org/jasc/2162)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019022828392

## Discrepancy

CONT CAB ZONE TEMP ILLUMINATED ON MASTER CAUTION RECALL, ZONE TEMP EXTINGUISHED ON MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED TEMP CONTROLLER BITE CHECK ON BOTH CONTROLLERS. TEMP CONTROLLER #2 FLAGGED FLT DECK TRIM AIR VALVE. CONTINUED BITE AND CLEARED FAULT. RAN BOTH CONTROLLER BITE CHECKS AGAIN, BOTH PASSED. NO FAULTS.

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